sheetsda writes "E3 Footage from Portal 2 is now available for viewing on Steam. A slew of new physics-based gameplay mechanics and their interaction with portals are shown including lasers, bouncing goo, and blackhole-like suction pipes. Looks like Valve has another winner on their hands."
Whenever a system becomes completely defined, some damn fool discovers
something which either abolishes the system or expands it beyond recognition.